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<blockquote data-quote="Allen" data-source="post: 395530" data-attributes="member: 389">I &quot;thought&quot; the river looked slower and somewhat more viscous than normal above the upstream edge of the ice.&nbsp; Maybe it was just slushier.&nbsp; Our drop to such chilly temps was maybe quicker than normal, plus discharge out of Garrison's temperature would be closer to freezing temps than early December allowing for an overall faster rate of ice production.Anyway, the bottom line is that collisions between the downstream moving ice pans were overall less violent, and this helped prevent the pans going from horizontal to vertical.&nbsp; You can see this in that the river's ice surface is somewhat less jagged than in past years.&nbsp;&nbsp; Anyway, that's kind of the Cliff Notes version of why it didn't rise as high, but what the major factor that drove it isn't as clear.One thing is for sure, it happened pretty quickly.&nbsp; I was watching the ice down at the Desert late in the afternoon the day before it showed up in Bismarck.&nbsp; It filled in quickly.</blockquote>

[QUOTE="Allen, post: 395530, member: 389"] I "thought" the river looked slower and somewhat more viscous than normal above the upstream edge of the ice. Maybe it was just slushier. Our drop to such chilly temps was maybe quicker than normal, plus discharge out of Garrison's temperature would be closer to freezing temps than early December allowing for an overall faster rate of ice production. Anyway, the bottom line is that collisions between the downstream moving ice pans were overall less violent, and this helped prevent the pans going from horizontal to vertical. You can see this in that the river's ice surface is somewhat less jagged than in past years. Anyway, that's kind of the Cliff Notes version of why it didn't rise as high, but what the major factor that drove it isn't as clear. One thing is for sure, it happened pretty quickly. I was watching the ice down at the Desert late in the afternoon the day before it showed up in Bismarck. It filled in quickly. [/QUOTE]

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